I recently saw a Netflix documentary on vpaing (e-cigarettes miracle or menace)
Now some of the information was very flawed in my opinion, but what was interesting was a study they did of some lung tissue cell death/damage in three scenarios:
1) Smoking
2)
vaping menthol e-juice
3)
vaping pina colada e-juice
Of course smoking was the most damaging, no question there. When they compared menthol and pina colada juice though, the percentage of cell damage was markedly higher with menthol than it was pina colada. And this was a substantial difference.
So I guess the take home is that these flavorings were never meant to be inhaled. While menthol for example is safe in cosmetics, edibles, etc, it's not so innocuous when inhaled like we do. Different flavorings most likely have a wide range of possible problems, or how the body will handle them when inhaled.
I would have been interested to see the numbers in a fourth scenario to the above, when just unflavored juice was vaped.
We don't know the long term effects of
vaping even just VG/PG yet. Any additional ingredient to ejuice are additional unknowns.
I'm not trying to be a party pooper here, I vape mostly unflavored, a few times a year, I'll vape something with a bit of flavor. Personally, I will probably try to stick with unflavored from here on out. The fewer ingredients, the less risk of long term consequences.
And yes, probably almost any ejuice is safer than smoking. I vape for the nicotine though, not the flavoring, so I figure why not minimize MY risk factors as much as possible? It's all really unknown at this point, other than we're pretty sure it's much less harmful than smoking.
If you need flavors to vape and not smoke, then by all means do so. If you have issues you think are related to a specific flavor and those issues concern you, then try something different.